Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Huosai intake tube leakage

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Yak-List
View previous topic :: View next topic  
Author Message
wlannon(at)shaw.ca
Guest





PostPosted: Sun Dec 23, 2018 2:14 pm    Post subject: Huosai intake tube leakage Reply with quote

See JL2A’s post re cracking around # 4, 5 & 6 cyl intake drain ports on the Huosai engine..

If you have modified these intake tubes to accept a quick drain system without first reinforcing the tubes you are a candidate for this failure.  It is a job for a good aircraft alum. welder. Patches have to be formed and fitted to the tube and the plug boss prior to welding.

The problem arises since the Chinese weld here does not account for the sharp change in cross section between the plug boss and the very thin wall of the tube.
It is adequate (but questionable!) for the original design only. The addition of a drain fitting, or even a hose leading to a drain fitting, is enough to change the dynamics and introduce fatigue cracking around the boss.

This is not a new problem by any means but since I have done no complete restorations in recent years I had forgotten about it. I recent years I look after only my
own CJ (modified 20+ years ago) and two others with M14P engines which were properly reinforced in production. Have to admit old age may have some bearing
here as well.

Walt


Virus-free. www.avast.com [url=#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2] [/url]


- The Matronics Yak-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Yak-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group